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Things to do in London (weekday picks sent at 7pm the night before)Londonist Daily (news and features digest, sent out at 5pm each day)Best of Londonist (weekly email, sent Sunday morning)The Weekend Guide (sent Thursday lunchtime)

ART: Pop along to Elephant and Castle shopping centre to see Culture Shop: January Sale, an exhibition and live art event by young people in an empty unit. Free, just turn up, 6.30-8.30pm

IMPROV MARATHON: The annual Improvathon takes place at Hoxton Hall. That’s a “50-hour non-stop improvised comedy soap opera in twenty-five 2-hour episodes” set in Cairo, 1926. Most of the participants will see the whole thing through without sleep, which will make for some extraordinary performances, plot twists and insanity. Do the marathon with them (tickets £55) or go for a 1 hour 45 min episode (£10). There’s even a child friendly episode on Sunday from 11am-1pm. £55 (full marathon), £10 (hour and half episode), prebook, 7pm until Sunday at 9pm.

BOOKS: Tim Parks and Swiss author Peter Stamm are in conversation at the London Review Bookshop. £10, just turn up, 7pm

COMEDY: Claudia O’Doherty does another run of her surreal, deliberately ramshackle and hilarious show The Telescope at the Soho Theatre. £12.50, prebook or turn up, 9.15pm

Random London Fact of the Day
Archway is the only London Underground station containing none of the letters in LONDONIST. This fact is also true for Time Out London.

London WeatherIt’s cold enough to see your breath. Astound your colleagues and win new friends by holding a pencil to your mouth — cigarette-like — and blowing out puffs of ‘smoke’. Then, after allowing suitable amounts of time for them to goggle at your party trick, reveal that you’re not smoking a pencil at all. No. It’s just water vapour created when the hot moist air from your lungs hits the cold atmosphere. They won’t have ever seen anything like it before. “No way!”, they’ll say. Trust us. BBC Weather has a more sober weather report.